hum

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  1. MTDIYer

    Hum/Resonance After Repair - How to fix?

    Our AC failed in the summer. A local contractor diagnosed the problem as with the blower motor. He replaced it, and the system works. But, he and we noticed a hum, a low resonance sound, coming from the vents. He said he would fix it. But after repeated calls, which he fails to return, I think...
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